Three-Dimensional Micro-Flow Measurement in a Capillary with a Diode Laser Micro-Particle Image Velocitometry

Author(s):  
C.T. Pan ◽  
P.J. Cheng ◽  
Yeong Maw Hwang ◽  
M.F. Chen ◽  
H.S. Chuang ◽  
...  
2006 ◽  
Vol 505-507 ◽  
pp. 343-348
Author(s):  
C.T. Pan ◽  
P.J. Cheng ◽  
Yeong-Maw Hwang ◽  
M.F. Chen ◽  
H.S. Chuang ◽  
...  

A self-built micro-particle image velocimetry (micro-PIV) with a diode laser is established to measure the micro-fluidic phenomenon in a 100 μm rectangular capillary. By scanning method, a 3-D flow image with a flowrate of 0.3 μL/min is presented. With this calibration method, the measurement ability for 3-D micro-fluidic dynamics could be achieved. This technique also reveals its benefit and potential in metrology. Hence, it provides a helpful tool for Bio-MEMS research. The experiment is proceeded under laminar flow, Re= 0.011. The measurement range is ranging from 0.05μm/s to 4.3mm/s. The vector grid resolution is optimized to 2.5 μm.


Author(s):  
Takeshi Fujimoto ◽  
Souichi Saeki ◽  
Takashi Saito ◽  
Takafumi Hiro ◽  
Masunori Matuzaki

This paper presents three-dimensional micro flow measurement system “OCTIV”, which is based on Optical Coherence Tomography. This was applied to solid-liquid two-phase flow in the microchannel. Consequently, OCTIV has an attractive two-component and three-dimensional velocimetry for micro flow.


2000 ◽  
Author(s):  
Joseph M. Bauer ◽  
David J. Beebe

Abstract A technique for determining the three dimensional motions of hydrogel structures in microchannels is introduced. In developing this technique, we have adapted microscopic particle image velocimetry (μPIV), a method for measuring velocity fields in microfluidic devices. The motions of 1 μm fluorescent seed particles that are incorporated into a hydrogel microstructure (200 μm tall × 400 μm diameter) are tracked over several expansion cycles using microscopy. Combining measurements taken in different planes produces a three-dimensional representation of the motions present during volume changes can be reconstructed. By providing cross sections of the local deformation rates in hydrogel microstructures, this technique allows for the optimization of device designs as well as providing a better understanding of the processes by which hydrogels change volume under mechanical constraints.


Author(s):  
Christina Politz ◽  
Nicholas J. Lawson ◽  
Robert Konrath ◽  
Janos Agocs ◽  
Andreas Schröder

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